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Phys Rev Lett. 2004 Jan 16;92(2):023003. Epub 2004 Jan 16.

Strong field quantum path control using attosecond pulse trains.

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Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803-4001, USA.


We show that attosecond pulse trains have a natural application in the control of strong field processes. In combination with an intense infrared laser field, the pulse train can be used to microscopically select a single quantum path contribution to a process that would otherwise consist of several interfering components. We present calculations that demonstrate this by manipulating the time-frequency properties of high order harmonics at the single atom level. This quantum path selection can also be used to define a high resolution attosecond clock.

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